Merge pull request #514 from juliaelman/homepageredux

[Bug 879052] Adding disabled email address field + email privacy dropdown.
[fix bug 883194] Re-add email privacy settings.
Cleanup edit_profile.html.
[fix bug 883989] Show avatar of visited profile.
Don't use mailto to link email addresses.
Display 'Remove photo' checkbox only when user has uploaded a photo.
Update tests.
Upgrade django-csp.
Merge pull request #512 from glogiotatidis/csp-upgrade

Upgrade django-csp.
Merge pull request #515 from glogiotatidis/homepageredux

Homepageredux